Zoom dual-aperture camera with folded lens
Zoom digital cameras comprising a Wide sub-camera and a folded fixed Tele sub-camera. The folded Tele sub-camera may be auto-focused by moving either its lens or a reflecting element inserted in an optical path between its lens and a respective image sensor. The folded Tele sub-camera is configured to have a low profile to enable its integration within a portable electronic device.
1 . A folded camera, comprising: a lens module comprising a lens with a plurality of N lens elements L i , 1≤i≤N; a first reflecting element that folds light from a first optical path to a second optical path; and an image sensor, wherein the lens elements are designed to have respective diameters that do not substantially exceed a lens aperture diameter, and wherein a camera module height of the folded camera is smaller than 1.25×(1+the lens aperture diameter), wherein each lens element L i has a respective optical height H i defining a maximal optically used diameter of the lens element L i , wherein a first lens element L1 is closest to an object and has an optical height H 1 , and wherein H i ≤H 1 for 2≤i≤N.
2 . The folded camera of claim 1 , wherein the image sensor has an image sensor height measured along an axis parallel to the first optical path, and wherein the image sensor height is larger than H 1 .
3 . The folded camera of claim 1 , wherein all of the plurality of N lens elements have a common lens optical axis.
4 . The folded camera of claim 3 , wherein the second optical path is parallel to the common lens optical axis.
5 . The folded camera of claim 1 , wherein the second optical path is perpendicular to the first optical path.
6 . The folded camera of claim 1 , wherein the folded camera exhibits a percentage of <25% blocked light for all viewing angles.
7 . The folded camera of claim 1 , further comprising a second reflecting element that folds light from the second optical path to a third optical path between the lens module and the image sensor, wherein the third optical path is parallel to the first optical path.
8 . The folded camera of claim 1 , wherein the lens module has an effective focal length EFL between 8 mm and 30 mm.
9 . The folded camera of claim 1 , wherein the lens module has an F number F# and an effective focal length EFL, and wherein the lens aperture diameter equals EFL/F#.
10 . The folded camera of claim 9 , wherein the F#<3.
11 . The folded camera of claim 9 , wherein the F#≤2.9.
12 . The folded camera of claim 9 , wherein the F#≤2.75.
13 . The folded camera of claim 9 , wherein the F# is in the range of 2-3.
14 . The folded camera of claim 1 , wherein the image sensor has an image sensor size larger than 4.5 mm×3.35 mm.
15 . The folded camera of claim 1 , wherein the plurality of N lens elements comprises 3 to 5 lens elements.
16 . The folded camera of claim 1 , wherein the image sensor has a sensor size S that fulfills ¼″≤S≤⅓″.
17 . The folded camera of claim 1 , wherein the camera is included in a mobile device.
18 . The folded camera of claim 17 , wherein the mobile device further includes an upright camera.
19 . The folded camera of claim 17 , wherein the mobile device is a smartphone.
20 . The folded camera of claim 18 , wherein the mobile device is a smartphone.